Expanded metal.



PATENTED DEC; 31, 1907.

N. E. CLARK.-

EXPANDED METAL.

APPLICATION FILED MAY 15, 1907.

I5 I 5' WW I BB a known nrirnn nnnannnnrmtrar;

fipeeificatien of Letters hatent.

Original application filed June 26 illlfliirderial-liou 823.4351. Divided and thliihpplioation flled l'iay- 1307. ilcrial lio 373 17(23- To all tvhdm 'it may concern." r I that i, NORRIS Emnonn CLARK a citizen of the United States, residand its 'manuf particularly for lathing and grilles, and this application is a divisional one from Serial No.

"323,451, fi1ed by me June 2c, 1906.

One object s toprovide an improved ma.

tei'ial having great strength and olding ca pacity. ,In its preferred form this requires a special method of manufacture, as hereinafalter set forth.

' Y .o'fo e s9 '10 etc; are turnedu from the o P nmg p 8.."lhe method -of.forminfg an expanded I metal fabric which consists in slitting a sheet 1-2, etc are turned y *uni forniity he strength of theiproduct ahd line xex Fi 1.

Figure 1 is a view of a fragment of nnate-- rial of m invention. Fig. 2 is a longitudinal sectiona view of the same on the plane of the t Fig. 3 is a transverse sec ti'onal view on the plane of theline -Y p e fabric is made by first slitting a sheet of metal so as to form strips 1, 2, 3, 4:, etc. connected or bonded at intervals, such-as 5, 6,7, 8, etc." in alternating arrangementgsec- 0nd, stretching the sheet so as to open the slits and form openings see as 9, 10,11, 12, etc. and third, turning parts of-the strips, such as 13, 1t, 15 and 16, on edge, leaving the bonds flat. p

w When slitting the sheet, the out edges of the strips, which termed the strands, are compressed and beveled off 'srnoot The" expansion or I stretching is preferablyso effected that the "sion. The

bonds and strands remain in the same plane, Y

in to and so that the strands-Where they be diver e are tangential to each other. wa t n this resulting productsmoother if rolled after ex larly when the rolling is su cient to produce reduction in gage of, the metal. Theredireedgeslof the strands,v

*strandson edge. Allthe strands in the row plane of the sheet ,TlllS of course means at lainville, Hartford county Gonnectiout, have invented certain new and usefullmprovements in Ex anded'Metal, of which the following is a scri tion.

bound what are usually e metal is not injured by 'theexpan-. 133 much ansron, particue res-1 ts. 1n,

causes tne least strains inthe metal. The bonds of the corn leted fabric all he in a sin- ,gle lanaavhile tnestrandsvserve as'holding anc ors in planes at right angles to the origirat I claim is:

'3. An expanded metal fabric consisting of strands connected at intervals by 'bends fand spaced apart intermediate the bonds to form openings, all theedges of the strands bounding the openings in alternate rows being turned in'the same directionfrorn the plane 41. An expanded metal fabric conrpose'd of twisted stitands, are rounded, and hat bonds connecting the strands. i V f 5. An expa ded metal fabric composed: of

pressedon'the edges. ,1

6. An'expanded' metal. fabric composed of '0 enin'gs in the adjacent rows, an t eedges of all .openingsof lalternate rows up from the plane 0 the sheet. 7, 1

so as to produc strands connectql bayinbonds I in alternating. arrangement, jexpan L U I J nal sheet. The edges of the strands being smooth, thereis no tendency forthem to cut when nsedastwisted strands 'onnected' by fiat bond? come g t e Patented. Dee. anietw;

1. an expanded metal fabricconsisting of strands, the bonds being round on the edges .70;

p in alternate rows-being turned the same direction from the plane x of. the bonds.

of the bonds, the 'edges'of the strands; elng' the corners of Whose edges v Y t metal. I

ion

{of a i pair, .a ternating and overlapping the turning the strands bounding the I slitted sheet and nlaintaining the bolids and strands-in the same plane, and then turning .the strands on edge.

9. ,The method of forming 5 metal fabric: which includes sheet troun an expanded expanding a theedges of the.st rands, and I then turning't e strands onled-ge. '10. The method of forming an ex anded I metal' fabric which consists 1o sheet soas to form strand 1n slitting the-- s. connected in alternating arrangement, then opening the slits bubmain'taining tangential to each 0t er at the points of connection, and then twisting the strands on the adjacent strands 

